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From a point A on the ground , the angle...

From a point A on the ground , the angles of elevation of the top of a 10 m tall building and a helicopter hovering at some height of the building are `30^(@) and 60^(@)` respectively. Find the height of the helicopter above the building

A

` 10 sqrt(3)`

B

` 20 ( 3 + sqrt(3))` m

C

20 m

D

30 m

Text Solution

Verified by Experts

The correct Answer is:
C
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